[GRASS-dev] [GRASS GIS] #2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc speed

GRASS GIS trac at osgeo.org
Sun Feb 19 23:58:42 PST 2017


#2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc speed
--------------------------+---------------------------
  Reporter:  sprice       |      Owner:  grass-dev@…
      Type:  enhancement  |     Status:  new
  Priority:  normal       |  Milestone:  7.2.1
 Component:  Raster       |    Version:  svn-trunk
Resolution:               |   Keywords:  ZLIB LZ4 ZSTD
       CPU:  OSX/Intel    |   Platform:  MacOSX
--------------------------+---------------------------

Comment (by mmetz):

 Replying to [comment:57 wenzeslaus]:
 > This seems like a great success!
 >
 > Seth, do you want to add another method?
 >
 Other possible methods are LZ4H and lzma from xz, but IMHO the currently
 implemented methods are sufficient.

 > MarkusM, is there something else remaining?

 I don't think so.
 >
 > MarkusN, anything you want to change or document?

 Maybe some documentation that BZIP2 is not always providing the highest
 compression ratio, it needs to be evaluated for each dataset separately.
 >
 > If everybody is OK, we can close this.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2750#comment:58>
GRASS GIS <https://grass.osgeo.org>



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